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LP3981-50B5F Datasheet(PDF) 3 Page - Lowpower Semiconductor inc |
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LP3981-50B5F Datasheet(HTML) 3 Page - Lowpower Semiconductor inc |
3 / 8 page Preliminary Datasheet LP3981 LP3981 – 01 Ver. 1.1 Datasheet Feb.-2008 Page 3 of 8 Electrical Characteristics (VIN = VOUT + 1V, CIN = COUT = 1µF, CBP = 22nF, TA = 25° C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Output Voltage Accuracy ΔVOUT IOUT = 1mA −2 -- +2 % Output Current Iout VEN=VIN,VIN>2.5V 300 mA Current Limit ILIM RLOAD = 1Ω 360 400 mA Quiescent Current IQ VEN ≥ 1.2V, IOUT = 0mA 75 120 μA Dropout Voltage VDROP IOUT = 200mA, VOUT > 2.8V 170 200 mV IOUT = 300mA, VOUT > 2.8V 220 300 Line Regulation ΔVLINE VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA 0.3 % Load Regulation ΔLOAD 1mA < IOUT < 300mA 0.6 % Standby Current ISTBY VEN = GND, Shutdown 0.01 1 μA EN Input Bias Current IIBSD VEN = GND or VIN 0.01 100 nA EN Threshold Logic-Low Voltage VIL VIN = 3V to 5.5V, Shutdown 0.4 V Logic-High Voltage VIH VIN = 3V to 5.5V, Start-Up 1.2 Output Noise Voltage 10Hz to 100kHz, IOUT = 200mA COUT = 1µF 100 uVRMS Power Supply f = 100Hz PSRR −73 dB Rejection Rate f = 10kHz COUT = 1µF, IOUT = 10mA −70 Thermal Shutdown Temperature TSD 165 °C |
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